Nighslee is required by law in certain states to charge our customers sales tax. The tax rate varies from state to state based on the delivery address and will be calculated once the shipping address is entered.

My mattress is sagging in the middle, what is wrong?

This is most likely due to not having the proper amount of support under the mattress. Be sure to have the proper amount of support under the mattress to reduce the chance of sagging. If there is significant sagging, this could be due to a warranty issue. Contact our support for assistance.